Biden returns to White House

12/30/12 3:06 PM EST

Vice President Joe Biden has returned to the White House from his home in Delware, an aide confirms.

The aide declined to provide more details about what Biden is doing and whether he is trying to help restart fiscal cliff negotiations in Congress.

As talks on a deal stalled in the Senate Sunday afternoon, Minority Leader Mitch McConnell said he called the vice president to ask for help prodding Democrats.

“I'm concerned with the lack of urgency here. There’s far too much at stake for political gamesmanship," he said. "...In order to get things moving, I have just spoken with Sen. [Harry] Reid. I also placed a call to the vice president to see if he could help jump start the negotiations on their side.

"The Vice President and I have worked together on solutions before and I believe we can again," he said.